Sink-trap.



Patented Sept. l9, I899.

Nu. 633,5"). A. C. FREED.

SINK TRAP.

(Application filed Mar. 20. I899.)

(No Model.)

a: M j 7 5 7 /m 5 ML u M "m HI m M w ,XUJ [W ru /N VEN 70H, flarm 14 38661.

W/TNESSES. W {i W THE NORRIS vsrzns cu. mmouwmwnmorou u c,

UNITED STATES PATENT GEEICE,

AARON O. FREED, OF ROYERSFORD, PENNSYLVANIA.

SINK-TRAP.

SPECIFICATION forming part of Letters ratent no. 633,510, datedSeptember 19, 1899.

Application filed March 20, 1899.

To all whom it may concern.-

Be it known that I, AARON O. FREED, a citizen of the United States,residing at Royersford, in the county of Montgomery and State ofPennsylvania, have invented new and useful Improvements in Sink-Traps,of which the following is a specification.

My invention relates to sink and sewer traps of that class ordescription in which the lower end of the inlet to the trap is providedwith a counterbalanced pivoted valve, which when the water rises to apredetermined height in the said inlet will be automatically tilted oropened, so as to allow the water to escape into the trap, from whence itwill flow out through the outlet-pipe.

The object of the invention is to provide an improved construction ofsuch inlet by which a water seal and tight joint will be formed betweenthe valve and its seat when the valve closes, thereby preventing theescape of gases from the trap.

It is also an object to otherwise improve said traps,whereby I secureimportant advantages with respect to efflciency in use.

The invention consists in the novel construction and combination ofparts hereinafter fully described and claimed.

In the accompanying drawings, Figure 1 is a central longitudinalsectional view of a sink or sewer trap constructed in accordance with myinvention. Fig. 2 is a bottom plan view of the upper section of thetrap, showing the valve open.

In the said drawings the reference-numerals 1 and 2 designate the upperand lower sections, respectively, of the trap, each consisting of asemispherical cup or casin g formed at one side with a recessedenlargement to receive the counterbalance or weight of a valvehereinafter described. At their meeting edges said cups or casings areformed with circular flanges 3, provided with lugs 4, having holestherein to receive the bolts 5, by which the cups or casings are securedto each other. A washer 5 is interposed between the two cups.

Formed at the lower end of the lower section or cup 2 is ascrew-threaded boss 6, with which the outlet-pipe (not shown) is adaptedto be connected. The upper end of the upper cup or casing 1 is formedwith a corresponding but smaller boss 7, also screw- Serial No. 709,802.(No model.)

threaded, with which the inlet pipe (not shown) is to be connected. Thelower end of the boss 7 is screw-threaded to receive the upper end ofashort pipe 8, which extends downwardly to about the center of the trapand is formed near its lower end with a peripheral flange 9 to hold inplace a water receptacle or reservoir 10. This receptacle or reservoirconsists of a straight cylinder, open at the upper end, and is formed atthe lower end with an inwardly-extendingflange12,whichissupported by theflange 9 of the pipe 8. A washer 13 is interposed between said flangesfor the purpose of making a tight joint. The reservoir 10, whilecylindrical in shape, is eccentric to the pipe, so that there will be alarger space therebetween at a point opposite the fulcrum of the valve.Formed integral with the lower end of said receptacle or reservoiraretwo lugs 14, with which is pivotally connected a lug 15, formed with avalve 16. This valve is cylindrical in shape and is provided at the edgewith an upwardly-extending flange 16, forming a dish or cup shapedreceptacle which is of a larger diameter than the pipe 8, so that whenthe valve is closed there will be a space.

between said flange and pipe. Located in said valve is a sheet-lead orother soft disk 17, which forms a seat for the lower end of this pipe 8.The space between the flange of the valve and the pipe is to receivewater to make a water seal. It will thus be seen that there will be awater seal and a soft-1netal seat between the valve and pipe 8. The saidpipe 8 is formed with a series of upper and lower holes 17,communicating with the receptacle or reservoir, so as to allow water toenter and escape from the latter. The numeral 18 designatesacounterbalance-weight secured to the lug of the valve and works in therecessed extensions of the cups or casings.

The operation is as follows: The two cups are secured to each other withthe recessed extensions coinciding with each other, the pipe 8 beingsecured to the lower end of boss 7 and the flanges 9 and 12 clamping thereceptacle or reservoir to the upper cup or casing. WVhen the water inthe pipe 8 and inletpipe is not sufficient to overbalance the weight ofthe valve, the latter will be closed. As the water rises in said pipes aportion thereof will enter the receptacle or reservoir through the holesin the pipe 8, filling the same. lVhen the water in the pipes issuflicient to overcome the weight of the counterbalance of the valve,the latter will be opened, when the water will rush out of the saidpipes into the lower cup, from whence it will escape through the lowerboss and outlet-pipe. This boss and outlet-pipe are larger in diameterthan the inlet-pipe, so as to allow the water to rush or escape rapidlyfrom the trap. As soon as the water escapes from the pipe 8 the valvewill close. The water in the receptacle or reservoir will now escapetherefrom through the lower series of holes into pipe 8, from whence itwill escape into the valve, which by reason of its upwardly-extendingflange forms a dish-shaped receptacle. The water in the valve now formsa seal and the softmetal seat forms a tight joint, preventing the escapeof gases from the trap.

From the above it will be seen that I provide a very eflicient trap,peculiarly applicable to sinks, in which there is no danger of freezingand choking up and by which there is no liability of sewer-gasesescaping into the inlet-pipe, as the water from the receptacle orreservoir commences to flow into the valve as soon as the latter isclosed, escaping between the lower end of the pipe 8 and the valve.

Having thus fully described my invention, what I claim is 1. In a sinkor sewer trap, the combination with the connected semispherical sectionseach formed with a screw-threaded boss, of the downwardly-extending pipesecured to the upper section formed with upper and lower holes, thereceptacle or reservoir surrounding said pipe and the counterbalancedpivoted valve, substantially as described.

2. In a sink or sewer trap, the combination with the two connectedsemispherical sections, each formed with a recessed extension and with ascrew-threaded boss, of the downwardly-extending pipe secured to theupper boss formed with a series of upper and lower holes, and thereceptacle or reservoir surrounding said pipe, and the dish-shaped valvepivotally connected with said receptacle and provided with a soft-metalseat, substantially as described.

3. In a sink or sewer trap, the combination with the two connectedsemispherical sections formed with recessed extensions and with screwthreaded bosses, of the downwardly-extending pipe secured to the upperboss and formed with upper and lower holes and provided with aperipheral flange near the lower end, the receptacle or reservoirsurrounding said pipe provided with an inwardlyextending flange at thelower end, and the counterbalanced dish-shaped valve pivotally connectedwith said receptacle, or reservoir, substantially as described.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

AARON O. FREED.

\Vitnesses:

MAURICE A. FREED, H. A. T son.

